Rotary valve



Y l 1oRLAipo, tunisina. n

MAN and' VlVlInnaM. JAoKMAN, citizens fof the" United States, andresdentsoffDetroit, in` thecounty of Wayne and State of Michigan, andOrland,` in the county of "Steubenrandl` Stateof Indiana, respectively,havev invented certain lnew. and useful `Improvements in l i'Rotary'ifValves, fof which ktheffollovvingfis a specification.- vi i x eThis invention relatesy to.improvements a in rotaryvalvesespeciallyadapted for use on internal combustion engines and: itis f the principal object of the inventionfto provideL a 1 rotary:valveio'f such construction as vvill take care` ofthe intalring andexh'austf ing ofthe fresh and; spent gases toandffrein` the combustionchambersof the e'ngi-nelcyl-` inders; intermittently and at properly`timed `2oI employed to accomplishthese lends and as a1consequence,req1niring the forming of but 'af singleyportiinft n n nAnotherand'equally lmportantxobject of' e,` engine `zcylinders'. 1 f

the invention `/isffto provide :a rotary valve,

the shell of .Which-is formed with, novel eX- w haust portsWhiehportsarev capableo'f beinof alinedatproperly timed periods withiexvaustl passages or "Ways'formed in adjacentportions of theenginecylinders Wlhereby to cause .thelclearing of thecylinders subcharges".yi v Other objects:` ill be injpart in part pointed out hereinafter.

n The Whichwill bexmore fullydeSoribed inthe ,followingspecification"and-then*finally embodied in theclauses of Vthe claimsWhich- -A i are appended to this specification and `vvhichf 451 n r,

form an essential partthereof. i '3 In the drawings l v Figure 1 is afragmentary verticallongitudinal section through thecylinders of anengine Vshowing the arrangement :of our im-A proved rotary `valve `Withirelation tothe]` heads ofthe samev a i Figure 2 is agverticalsectionthrough the i cylinder head andthe valvetaken `on the line 2-2ofFigurell, and

line 3--3 of Figure 1. j n j y UNI-'rau A I "'.FiguXeisal through the nrotary valv dividing vvall thereinw 'f' f 'd-raivlngs, in'connectionwithWhich'lilie'` L Y reference charactersewill designateA corre-` rangedlaftransversely disposed head1-1;, said` i headrbeing formed" toyconstitute an eicient" Inhearing for theimproved valve hereinafter morefull-ly ,described` and having "a cap' 21 Y a avinfpositionfby means ofbolts 3, Whighcap recurrlng periods, thus "eliminatingthe use ofiseparate valves lsuehz asynoW" commonly` J e inventionconsists,furthermore, in i the novel arrangementsand combinations ofAthe parts of the valve, as Well as inthe de# y tails of theconstruction ofthe same,.all offerhaus'ted' gases from thejvalve and*dis` c iar formed Vtherein `in longitudinally, stepped relation and aplurality of exhaust portsll` also formed therein and yarranged inlongitudinally." stepped relationtorsaid shell ibut f Figure 3 is asimilarsection takenon` .i Having more particularireferenoe gto" thenal* combustion engine, 'which as will be,

CHARLES autres A Sassicaia@Lefteifnu; N fratla Jafrsiieea" y" rpnca'tinifila'ipri 22, V191s.` ongitudinalffsectional1,vievv V5Shovvingthespiral 60 Lspondingpartsthroughout the severalviews, n V l ll represents the rupper portions of *thev lon-` ,f git-udinally arrangedcylinders of an yintercoolingV medium'- circulating', jacket, "tvhilevupon the .upperportion thereof there is far'-` l arrangedf over one;end' "thereof and s ec'ured` formed withja suitable' bearing'4,;th'epure *posewof -vvhich Will be? presently" appar`ent.i l

providing afpass'ageyvvay, to permit the cir?v culation -lofa coolingm-zdiunrtherealcoutY t andabout the improved valveyportions of n `theWalls ofthe headV formed with! pockets sequently; toffthe',` explosion"Aof i the gaseous j 1 t y n 6,"vvh1oh Ways are interoonnectedand'comobvious and"l or kWays 'generally indicated by the numeral,

fectual passagesfor receiving` thespent for shell59 having a 'pluralityof intake ports 10i` aligning with their respective intake" ports in thecylinders for an` obvious purpose.' Thes'eports lofandfll areadapted toybe in#` termittently aligned With-"companion portsyl indicated bythenumeral12 arranged "inthe i upper portions ofthe* Vvarious chamberslformed in theweasing head land communi-"1` y' y eating withithechambersofthe oylindersC"` l Y 90 lmunicate With exhaust'l manifold `7ysels cured to faportion ofthe*v head lby bolts/Qy 1 or likefasteningidevices 8.` ltjmay be here i n y;not,e.d,that these `pocketsor ways yformIef-` V )1 v95";f` ging the sameintofthe exhaust "manie"fold n 7 i, f Y 5 The improved valve `comprises a tubular i i e n A' inorderthat fresh and spent Ygases can be l' conducted to land from thesame. Portions of certain of the'exhaust ports 11 are enlarged as at 13'and-are so positioned as to align Awith the adjacent pockets orways 61ntermittently, While others' of the exhaust ports J11 Vhave theiradjacent extremities conneet-ed by an enlarged recessedportion 14, whichas will be noted, is so positioned as to disposedpocket or Way 6. Y i

As means for transmitting rotary motion intermittently align with theintermediately l of the valve, a stub shaft 15 is secured to oneendzthereoffvvhich is closed and is .re-.V

ceivedin the bearing 4 arranged in the cap 2; a sprocket Wheel beingmounted on its outer end and receiving a sprocket chain l16 or likeconnection thereabout, which in turn I is engaged with thecrank shaft'onthe en- 'gne i y Intake andf'exhaust passage Ways are formed in theshell of the `valve 1by arranging a `longitudinally extending spiralstrip 17 therein, said strip being so disposed as to cause the severalWays thereby to come: Vmunicate respectively Withfthe intake and exhaustports 10 and 11 which also are properly located; theenla'rged portions14 serv- Ving as anv outlet for the spent gases dis-k charged into theexhaust Way in the valve 'from the variouscylinders of theengine. Y

In operation, the valveisof lcourse ro- Y tated and'fresh gas Visconveyed by Way of the manifold 5 into theY intake Way formed therein;it being noted in'fthis connection,

that the adjacent. end ofthe exhaust passageway is closed by bending thestrip dovvn.v

Wardly thereover. The gas Will be discharged intermittently and atrecurring periodsinto the various cylindersofthe engine by vvay` of theintakeports v10 -Whioh as hereinbefore stated, are aligned with the Yv1,402,616 n ports 12 in thecasing head at properly timed periods',whereuponsaid rports are' disaligned from the ports 12 andthe explosion4of the various `charges .in the `engine cylinders take place; it beingnoted that the iring order of the cylinders is a, Ind, 0. Subsequentlyto the explosion of the gases in the engine cylinders, the spent ygasesarev V'exhausted theref, 'from upon the aligning of the exhaust portsVwith the ports v12; said spent gases passing v intov thepassage Waytherefor inthe valve and discharging therefrom by Way of the len-`larged portions 13 and 14Linto the pockets or Waysf from whence they:are conveyed by the exhaust manifoldl the' atmosphere.Y

7 outwardly into Manifestly, the constructionshown isfcapable. ofconsiderable modification andfsuch modification as is Within thescopeofour claims,V We .consider vwithin the spirit of your invention.v i

What We claim is y l Thev combination `With an engine engine `casingbeing formedvvith pockets openinginto the head, a v tubularfvalve rota!tably mounted in the head .and havinginvalve, certain ofthe endsofcertain of said exhaust ports being enlargedand theadja-l cent ends'othe remaining exhaust portsbegitudinally and spirally Within the valvetoprovide,y independent ways therein commucylinder head having a plurality.of 'longitudinally disposed ports, portions of the Wallso't` the eo Y7.5 i ing connected, and a partition arranged 1011- take andfexhaustports arranged ina .step by stepV manner circumferentially i of the

